ime, dwarf hairgrass is extremely invasive. e tellenus and s subulata are almost as bad, but at least you can pull up the growing tip of a runner and pull up as many plants as you need to.I aggree Hobbes, I like Java moss too. I was thinking of adding it to another part of the tank though. I also really like to dwarf sag Marco. How does it work? You plant one every 1/2" to 1" in the area that you want it? Is there any way of preventing it from becoming envasive? Like, adding a rock barrier, under the substrate, to prevent it from growing outside of the area that you want it to?
What about dwarf hairgrass? Anyone have an opinion on that?